After leaving graduate school I was able to be trained as a cabinetmaker by the State of Michigan for 2 & 1/2 years in mid 70's. Then apprenticed in a shop that made wood jewelry, using exotic woods and dyed veneer. Here we discovered how to make the Helical Mosaic process which I have been pursuing and evolving ever since. Through this process a 2 inch bowl can have 1000 pieces in it.